Re: Locking comment on shrink_caches()

Andrea Arcangeli (
Wed, 26 Sep 2001 00:01:02 +0200

On Tue, Sep 25, 2001 at 01:15:28PM -0700, David S. Miller wrote:
> I do think it's silly to hold the pagecache_lock during pure scanning
> activities of shrink_caches().

Indeed again.

> It is known that pagecache_lock is the biggest scalability issue on
> large SMP systems, and thus the page cache locking patches Ingo and
> myself did.


IMHO if we would hold the pagecache lock all the time while shrinking
the cache, then we could kill the lru lock in first place.

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